year 

https://doi.org/10.1351/goldbook.Y06723
Non-SI unit of time, a=31 556 952 s. The year is not commensurable with the day and not a constant. The value given corresponds to the Gregorian calendar year (a=365.2425 d).
Source:
Green Book, 2nd ed., p. 111 [Terms] [Book]
Citation: 'year' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.Y06723 RIS BibTex EndNote
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Last revised: February 24, 2014